Red Hat System Administration I

Log in to the serverb machine as the student user and switch to the root user.

[student@workstation ~]$ ssh student@serverb
...output omitted...
[student@serverb ~]$ sudo -i
[sudo] password for student: student
[root@serverb ~]#

Identify the unmounted block device that contains an XFS file system on the serverb machine. Mount the block device on the /review5-disk directory.

1. Identify the unmounted block device that contains the XFS file system.

   [root@serverb ~]# lsblk -fs
   NAME  FSTYPE LABEL UUID                                 MOUNTPOINT
   ...output omitted...
   vdb1  xfs          7694653c-45f6-4749-bd87-f2f69c37daa7
   └─vdb
   ...output omitted...

   From the preceding output, the vdb1 block device contains the XFS file system, which is not mounted on the system.

2. Create the /review5-disk directory.

   [root@serverb ~]# mkdir /review5-disk

3. Mount the vdb1 block device on the /review5-disk directory.

   [root@serverb ~]# mount /dev/vdb1 /review5-disk

4. Verify that the vdb1 block device is mounted on the /review5-disk directory.

   [root@serverb ~]# df -Th
   Filesystem     Type      Size  Used Avail Use% Mounted on
   ...output omitted...
   /dev/vdb1      xfs       2.0G   47M  2.0G   3% /review5-disk
   ...output omitted...

Find the review5-path file. Save its absolute path in the /review5-disk/review5-path.txt file.

1. Find the review5-path file. Redirect all error messages to the /dev/null special file.

   [root@serverb ~]# find / -iname review5-path 2>/dev/null
   /var/tmp/review5-path

   Note the absolute path to the review5-path file from the preceding output.

2. Use the vim /review5-disk/review5-path.txt command and save the absolute path to the review5-path file. The following example shows the expected content of the /review5-disk/review5-path.txt file.

   [root@serverb ~]# cat /review5-disk/review5-path.txt
   /var/tmp/review5-path

Find all files that the contractor1 user and the contractor group own. The files must have 640 octal permissions. Save the absolute paths of these files in the /review5-disk/review5-perms.txt file.

1. Find all the files that the contractor1 user and the contractor group own and that have 640 octal permissions. Redirect all the errors to the /dev/null special file.

   [root@serverb ~]# find / -user contractor1 \
   -group contractor -perm 640 2>/dev/null
   /usr/share/review5-perms

   Only the /usr/share/review5-perms file meets the criteria of the preceding find command. Note the absolute path to the review5-perms file.

2. Use the vim /review5-disk/review5-perms.txt command and save the absolute path of the review5-perms file. The following example shows the expected content of the /review5-disk/review5-perms.txt file.

   [root@serverb ~]# cat /review5-disk/review5-perms.txt
   /usr/share/review5-perms

Find all the files with a size of 100 bytes. Save the absolute paths of these files in the /review5-disk/review5-size.txt file.

1. Find all the files with a size of exactly 100 bytes. Redirect all the errors to the /dev/null special file.

   [root@serverb ~]# find / -type f -size 100c 2>/dev/null
   /usr/share/licenses/ethtool/LICENSE
   /usr/share/doc/libuser
   /usr/share/doc/plymouth/AUTHORS
   ...output omitted...
   /opt/review5-size
   ...output omitted...

   The preceding output might vary depending on the number of files that match the size criteria in your system. Note the absolute paths to all the files from the preceding output.

2. Use the vim /review5-disk/review5-size.txt command and save the absolute path of the files from the preceding output. The following example shows the expected content of the /review5-disk/review5-size.txt file.

   [root@serverb ~]# cat /review5-disk/review5-size.txt
   ...output omitted...
   /opt/review5-size
   ...output omitted...

3. Return to the workstation system as the student user.

   [root@serverb ~]# exit
   logout
   [student@serverb ~]$ exit
   logout
   Connection to serverb closed.
   [student@workstation ~]$